Dr. William John Perillo, DO
- Medicare services, 2024
- 221
- Medicare patients, 2024
- 180
- Part D claims, 2019
- 11
- Hospital affiliations
- 2
- Industry payments
- $474
- Practice address
- 2800 Main St, Bridgeport, CT 06606
- Practice phone
- Call (203) 576-5551
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Perillo's professional email, personal email and mobile number
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Dr. William John Perillo is an anesthesiologist in Bridgeport, Connecticut
Dr. Perillo practices at St. Vincent's Medical Center in Bridgeport, Connecticut, part of Hartford HealthCare.
Dr. Perillo's NPI, 1306292693, was assigned on May 5, 2016. Dr. Perillo graduated from New York College of Osteo Medicine of New York Institute of Technology in 2016. Dr. Perillo holds Connecticut license 65146.
- NPI
- 1306292693NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638436603
- NPI enumeration date
- May 5, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 576-5551
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William John Perillo practices at St. Vincent's Medical Center in Bridgeport, Connecticut
Dr. Perillo's primary practice is St. Vincent's Medical Center, at 2800 Main St, Bridgeport, CT 06606 in Fairfield County. The practice phone is (203) 576-5551.
- St. Vincent's Medical Center2800 Main St, Bridgeport, CT 06606 · Fairfield CountyPhone(203) 576-5551
Source: Dmand AI Affiliation Data
Dr. William John Perillo is affiliated with 2 sites of care and 1 medical group
Dr. Perillo's primary practice is St. Vincent's Medical Center in Bridgeport, Connecticut, part of Hartford HealthCare. Dr. Perillo is also affiliated with MidState Medical Center. The medical group on file is Integrated Anesthesia Associates.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William John Perillo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Perillo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Vincent's Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William John Perillo is one of 654 anesthesiologists in Connecticut
Anesthesiology is Dr. Perillo's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Perillo is licensed in Connecticut.
Specialties and state licenses
- Anesthesiology, ConnecticutPrimary
Anesthesiologists near Dr. Perillo
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William John Perillo billed Medicare for 221 services in 2024
CMS data shows 221 Medicare services from Dr. Perillo across 8 procedure codes in 2024, for 180 Medicare patients. Medicare paid $16,194 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Perillo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1002024: 11717%
- Anesthesia
- 2023: 672024: 5813%
- Imaging
- 2023: 472024: 462%
Dr. Perillo compared with the Connecticut median for anesthesiologists, 2024
- Dr. Perillo
- Connecticut median
- Medicare services
- 221vs 892.5 times
- Medicare patients
- 180vs 16013% above
- Part D claims
- 11vs 2658% below
Medians across 636 anesthesiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Perillo's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William John Perillo treated 180 Medicare patients in 2024, average age 74
CMS counts 180 Medicare patients who saw Dr. Perillo in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.65, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Perillo's median patient age at 71, with 58% women.
Dr. Perillo's Medicare patients by age, 2024
Dr. Perillo's Medicare patients by sex, 2024
- Women9653%
- Men8447%
Chronic conditions among Dr. Perillo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis71%
- Anxiety37%
- Ischemic heart disease35%
- Mood disorders31%
- Diabetes29%
- Atrial fibrillation27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Perillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William John Perillo wrote 11 Medicare Part D claims in 2019
In 2019, Dr. Perillo wrote 11 Medicare Part D claims. They cover 1 drug, with $226 in total drug cost. In 2016, CMS named 16 claims across 1 drug.
Dr. Perillo's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2019
- 2016
- 2019
- Claims for drugs CMS names
- 2016: 162019: 1131%
Drugs named by CMS: 1 in 2019, 1 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. William John Perillo takes part in Medicare
Dr. Perillo accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William John Perillo received $474 in industry payments from 2021 to 2025
CMS Open Payments shows 13 general payments to Dr. Perillo from 3 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Pacira Pharmaceuticals Incorporated paid the most, $188.
General payments to Dr. Perillo by program year, 2021 to 2025
Companies that paid Dr. Perillo the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William John Perillo graduated from New York College of Osteo Medicine of New York Institute of Technology
Dr. Perillo graduated from New York College of Osteo Medicine of New York Institute of Technology in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William John Perillo's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William John Perillo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William John Perillo's NPI number?
Dr. William John Perillo's NPI number is 1306292693. It was assigned on May 5, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. William John Perillo?
Dr. William John Perillo is an anesthesiologist in Bridgeport, Connecticut. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. William John Perillo practice?
Dr. Perillo practices at 2800 Main St, Bridgeport, CT 06606. Dr. Perillo's primary practice is St. Vincent's Medical Center in Bridgeport, Connecticut, part of Hartford HealthCare.
What is Dr. William John Perillo's office phone number?
The practice phone on file for Dr. Perillo is (203) 576-5551.
What is Dr. William John Perillo's medical license number?
Dr. Perillo holds Connecticut license 65146.
Which hospitals is Dr. William John Perillo affiliated with?
Dr. Perillo practices at St. Vincent's Medical Center in Bridgeport, Connecticut. Dr. Perillo is also affiliated with MidState Medical Center.
What medical group is Dr. William John Perillo part of?
Dr. Perillo is linked to Integrated Anesthesia Associates.
Does Dr. William John Perillo accept Medicare?
Yes. CMS data shows Dr. Perillo billed Medicare for 221 services in 2024, and Dr. Perillo accepts Medicare assignment.
How many Medicare patients does Dr. William John Perillo see?
CMS counts 180 Medicare patients who saw Dr. Perillo in 2024, with an average age of 74.
What services does Dr. William John Perillo bill to Medicare?
In 2024, Dr. Perillo's most billed Medicare services were surgery: brain, spine and nerves (64447), ultrasound (76942) and surgery: brain, spine and nerves (64999).
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Where did Dr. William John Perillo go to medical school?
Dr. Perillo graduated from New York College of Osteo Medicine of New York Institute of Technology in 2016.
What drugs does Dr. William John Perillo prescribe most?
In 2019 Medicare Part D data, Dr. Perillo's most prescribed drugs by claims were Oxycodone-Acetaminophen.
Has Dr. William John Perillo received payments from drug or device companies?
CMS Open Payments shows $474 in general payments to Dr. Perillo from 3 companies from 2021 to 2025. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Dr. William John Perillo been practicing?
Dr. Perillo graduated from medical school in 2016, 10 years ago.
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